From: Sascha Hauer <s.hauer@pengutronix.de>
To: Antony Pavlov <antonynpavlov@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: [RFC PATCH 2/6] dirty hack, fixme: disable mmu_cache_flush in arch/arm/cpu/start.c for Tegra
Date: Thu, 6 Oct 2011 13:07:26 +0200 [thread overview]
Message-ID: <20111006110725.GX31404@pengutronix.de> (raw)
In-Reply-To: <1317305076-3334-3-git-send-email-antonynpavlov@gmail.com>
On Thu, Sep 29, 2011 at 06:04:32PM +0400, Antony Pavlov wrote:
> Initial Tegra support has no initialisation routines, so
> it can't initialise the caches in the right way.
Not nice, but I currently do not see a much better way around this.
I think this is ok for now.
Sascha
>
> MMU & cache code in arch/arm/cpu/start.c hangs up a Tegra-based system.
>
> Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
> ---
> arch/arm/cpu/start.c | 3 +++
> 1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/cpu/start.c b/arch/arm/cpu/start.c
> index f8eb0a9..69fb5b0 100644
> --- a/arch/arm/cpu/start.c
> +++ b/arch/arm/cpu/start.c
> @@ -74,6 +74,8 @@ void __naked __bare_init reset(void)
> #ifdef CONFIG_ARCH_HAS_LOWLEVEL_INIT
> arch_init_lowlevel();
> #endif
> +
> +#ifndef CONFIG_ARCH_TEGRA
> __asm__ __volatile__ (
> "bl __mmu_cache_flush;"
> :
> @@ -89,6 +91,7 @@ void __naked __bare_init reset(void)
> r |= CR_B;
> #endif
> set_cr(r);
> +#endif
>
> #ifdef CONFIG_MACH_DO_LOWLEVEL_INIT
> board_init_lowlevel();
> --
> 1.7.6.3
>
>
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> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
>
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next prev parent reply other threads:[~2011-10-06 11:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-29 14:04 [RFC PATCH 0/6] ARM: initial Tegra support Antony Pavlov
2011-09-29 14:04 ` [RFC PATCH 1/6] " Antony Pavlov
2011-09-29 14:04 ` [RFC PATCH 2/6] dirty hack, fixme: disable mmu_cache_flush in arch/arm/cpu/start.c for Tegra Antony Pavlov
2011-10-06 11:07 ` Sascha Hauer [this message]
2011-09-29 14:04 ` [RFC PATCH 3/6] ARM: Tegra: add Toshiba AC100 support Antony Pavlov
2011-09-29 14:04 ` [RFC PATCH 4/6] arm: cpuinfo: Cortex-A9 dirty hack Antony Pavlov
2011-10-06 11:04 ` Sascha Hauer
2011-10-06 18:32 ` Antony Pavlov
2011-09-29 14:04 ` [RFC PATCH 5/6] toshiba-ac100: add USB host support Antony Pavlov
2011-10-06 11:05 ` Sascha Hauer
2011-09-29 14:04 ` [RFC PATCH 6/6] toshiba-ac100_defconfig update: enable USB-related stuff Antony Pavlov
2011-10-06 11:06 ` Sascha Hauer
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